You need the flywheel effect that a C-L-C tank circuit can provide. A broad
band transformer is not the answer. This was just discussed here at length not
long ago.
73
Jim W7RY
On Sun, Mar 14, 2010 at 2:58 PM, ZL2AAA <zl2aaa@paradise.net.nz> wrote:
> I think you will find it's nearer 35ohms.Morrie
> ----- Original Message -----
> From: "Lee Buller" <k0wa@swbell.net>
> To: <amps@contesting.com>
> Sent: Monday, March 15, 2010 9:30 AM
> Subject: [Amps] GI7B Question - Input Matching
>
>
> >
> > I have been reading about the GI-7B Russian made tube. It seems that the
> > input impedance of two tubes is around 100 ohms. Could you not just use
> a
> > 2:1 transformer to make a match from 50 ohms to 100 ohms? What am I
> > missing here.
> >
> > Lee - K0WA
> >
> > Ham Radio Operators: Kansas QSO Party is August 28-29, 2010. See
> > www.ksqsoparty.org for details
> >
> > In our day and age it seems that Common Sense is in short supply. If you
> > don't have any Common Sense - get some Common Sense and use it. If you
> > can't find any Common Sense, ask for help from somebody who has some
> > Common Sense. Is Common Sense divine?
> >
> > Common Sense is the image of the Creator expressing revealed truth in my
> > mind. - J. Wolf
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>
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